Recent content by YoshiMoshi

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    no$gba Debugger Help

    Yes please 😊! That would be great! Yea basic stuff like what is a breakpoint can be skipped.
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    no$gba Debugger Help

    Hey thanks! I really appreciate your help! You seem to be very knowledgeable of this stuff. Yea I have seen that 08000000 is the "ROM_START_LOCATION" instruction which just a branch instruction to a certain address, past the header information. Still I was hoping to start at 08000000, because...
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    no$gba Debugger Help

    Hello. I would like some help using the no$gba debugger. I would like to run through the code one step at a time, watch the values in the registers get updated, and see what happens on the screen, one instruction at a time. So I downloaded no$gba debugger, and I go to the starting address of...
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    ROM Flash Carts, is ROM patch required?

    Well I don't see any EEPROM on the board do you guys on the EZFLASH? So at the very least I guess it's emulating the EEPROM chip with the FPGA?
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    ROM Flash Carts, is ROM patch required?

    Nice something to invent
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    ROM Flash Carts, is ROM patch required?

    Thanks. So what devices do EZ-Flash and Everdrive support in terms of RTC, Rumble, Gyroscope, Light sensor?
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    ROM Flash Carts, is ROM patch required?

    So is there not yet a flash cart that supports all add-ons? RTC, light sensor, rumble and gyroscope?
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    ROM Flash Carts, is ROM patch required?

    I heard you often have to to patch ROMs to work on a flash cart. This is because the ROM is expecting EEPROM, Flash or SRAM to save games. Are there any flash carts that don't patch the ROM?
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    Help Understanding RTC

    Hey thanks so much! It's nice to find someone that has this knowledge that seems so rare. I hope to learn as much as I can! Is there a verilog implementation of the game boy advance? All I could "find" was the original game boy and not the game boy advance. I think I got the wire configuration...
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    Help Understanding RTC

    Hey thanks I really appreciate it! I always thought that pin 5 on the cartridge CS (chip select) was used to select what chip to read/write data to. I always figured it was something like 3.3 V is for the ROM chip and 0 V was for the save game data chip (EEPROM, Flash, SRAM, FRAM). Is this...
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    Help Understanding RTC

    So what's the need for three chips on flash cartridges that don't support RTC or light sensor or gyroscope etc? I know one chip is the ROM, and other is a method to save data. In order to RTC etc, you need a third chip, because flash memory devices don't have a GPIO interface Yet I see bootleg...
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    Help Understanding RTC

    Right I understand. You have to bit bang three wire SPI over the three GPIO pins. I'm just trying to understand if I have the right interface to the ROM chip? If I want to read GPIO Pin 0 I do this C8 = 0000000000000001 //set Pin 0 to R/W C6 = 0000000000000001 // Set Pin 0 to Read I then read...
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    Help Understanding RTC

    So let me see if I got this correct. Address locations below are for the ROM chip, and not the whole entire memory map of the GBA Address C8 is typically filled with all zeros. Address C4 and C6 are normally read from the ROM chip. If I attempt to write to the ROM chip a value of...
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    Help Understanding RTC

    Hey thanks. I've read those sites, they are very helpful. I'm just trying to understand conceptually what is going on. It's clear to me that the chip that holds the ROM contains a section that is truly ROM, and a SPI interface, and perhaps some RAM. It would seem that data from the SPI can be...
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    Help Understanding RTC

    So I noticed that games with RTC (such as Pokemon), the RTC IC (S3511 - 8pin RTC with 3-wire serial bus) is connected to the GPIO pins of the ROM chip. Does anyone know, are the GPIO pins set as input only? Meaning it can only read the data on the RTC IC? Is it able to write to it? As far as I...
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